<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>PHP Script Server</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="The Cacti Manual"
HREF="index.html"><LINK
REL="UP"
TITLE="Advanced Topics"
HREF="advanced_topics.html"><LINK
REL="PREVIOUS"
TITLE="Export Templates"
HREF="template_export.html"><LINK
REL="NEXT"
TITLE="Upgrade Steps for the Example HostMib Data Queries"
HREF="upgrade_using_hostmib_data_queries.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="manual.css"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>The Cacti Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="template_export.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="upgrade_using_hostmib_data_queries.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="PHP_SCRIPT_SERVER"
></A
>Chapter 14. PHP Script Server</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="php_script_server.html#USING_SCRIPT_SERVER"
>Using the Script Server</A
></DT
><DT
><A
HREF="upgrade_using_hostmib_data_queries.html"
>Upgrade Steps for the Example HostMib Data Queries</A
></DT
><DT
><A
HREF="migration_php_scripts_to_script_server.html"
>Migration of Existing PHP Scripts to Script Server</A
></DT
><DT
><A
HREF="testing_script_in_script_server.html"
>Testing Your Script in the Script Server</A
></DT
></DL
></DIV
><P
>			The PHP Script Server is a new feature in Cacti 0.8.6.  This new feature allows for the rapid
			execution of PHP based Data Queries in Cacti.  The Script Server process is launched by the poller
			during every polling cycle.  It listens for commands from the poller, executes them, and then waits
			for an quit signal.
		</P
><P
>			The reason that it is so fast is that PHP is started in memory only one time, and for every Data
			Query called, it's code is interpreted only once.  The resulting Data Query binaries are therefore
			very efficient.  Using the Script Server process over the traditional POPEN process nets a 20+ fold
			speed improvement in Cacti.
		</P
><P
>			Since PHP scripts are so powerful, this new feature in Cacti, makes it an excellent choice for
			collecting non-SNMP and SNMP based data.
		</P
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="USING_SCRIPT_SERVER"
>Using the Script Server</A
></H1
><P
>				Cacti 0.8.6 contains two sample script server routines.  They are for the collection of HostMib CPU
				and Disk Partition information.  These two examples are based off the traditional POPEN version of
				the HostMib functions found in earlier versions of Cacti.
			</P
><P
>				For new installs, the HostMib functions are defaulted to using the PHP Script Server, therefore,
				you don't need to do anything to use it.
			</P
><P
>				For upgrades, you must make several changes to start using the PHP Script Server for the HostMib
				CPU and HostMib Partitions Data Queries.  To migrate you must follow the step below.
			</P
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="template_export.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="upgrade_using_hostmib_data_queries.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Export Templates</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="advanced_topics.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Upgrade Steps for the Example HostMib Data Queries</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>